CN115815760A - Header board crossbeam welding machine with prevent welding slag structure of splashing - Google Patents

Abstract

The invention relates to the technical field of welding equipment, aims at the problem of welding slag splashing in the welding process of a beam of an automobile instrument panel, and particularly relates to a welding machine for the beam of the automobile instrument panel, which is provided with a welding slag splashing prevention structure, and comprises a workbench and a welding robot, wherein a welding gun is arranged at the output end of the welding robot; the protective plate is provided with a working hole, a drawing and separating cylinder and a fan, and a discharge hole of the drawing and separating cylinder is connected with the fan through a filter piece; the protection plate and the drawing cylinder are arranged at the output end of the welding robot through structural parts; the upper surface of guard plate is equipped with the scraper blade, still is equipped with clean actuating mechanism on the guard plate, and clean actuating mechanism control scraper blade is close to taking out from a section of thick bamboo when the guard plate breaks away from the crossbeam, and this application carries out the protection of parcel formula to the crossbeam surface through folded cascade's guard plate when crossbeam and weldment weld, can also carry out timely clearance through the welding slag that clean actuating mechanism control scraper blade was accepted to the guard plate to avoid the welding slag to pile up the influence welded process.

Description

Header board crossbeam welding machine with prevent welding slag splash structure

Technical Field

The invention relates to the technical field of welding equipment, in particular to an automobile instrument board beam welding machine with a welding slag splashing prevention structure.

Background

Welding, also known as fusion welding, is a manufacturing process and technique for joining metals or other thermoplastic materials, such as plastics, by means of heat, high temperature or high pressure.

The energy sources for modern welding are many, including gas flame, electric arc, laser, electron beam, friction, and ultrasonic, among others. In addition to use in a factory, welding can be performed in a variety of environments, such as the field, underwater, and space. Wherever welding can be dangerous for the operator, appropriate precautions must be taken while welding is being performed. The possible injuries to human body caused by welding include burn, electric shock, visual impairment, toxic gas inhalation, over-irradiation of ultraviolet rays, etc.

The welding machine has various types, such as single-point single function, single-point double function and single-point multiple function (the welding machine also has only one welding head, and can carry out welding at any angle between 90 degrees and 180 degrees after the form of the positioning plate is changed). And two-point, three-point, four-point and even six-point welding machines, four-corner welding machines and the like. Different types of welders also have different welding functions and work efficiencies.

The header board skeleton comprises more spare part, needs adopt the mode of electric arc welding to weld in proper order respectively each spare part, forms header board crossbeam at last, to this problem, chinese patent: CN201210351106.7 discloses a laser welding system for a cross beam framework of an automobile instrument panel, which comprises a welding room, a laser welding manipulator, a rotary welding station, an air draft dust removal system and an automatic control system, wherein the rotary welding station comprises a station platform, a first servo motor, a support beam and a welding tool mounting platform; an exhaust pipe inlet of the exhaust dust removal system is arranged in the welding room; and the automatic control system is used for controlling the laser welding manipulator, the first servo motor and the second servo motor. By the welding system, the independent tools for the beam framework of the automobile instrument panel can be intensively arranged on the two welding tool mounting platforms, and a plurality of parts can be intensively welded in the same working procedure at one station, so that the welding process is greatly optimized, and the welding working efficiency is improved; and the laser welding is adopted to replace the traditional arc welding, so that the automation degree is higher, the working efficiency is higher, and the welding quality is better.

However, the above patents still have the following problems in the process of welding the cross beam of the automobile instrument panel:

1. a large amount of welding spatters can be generated in the welding process, the welding spatters can fall and attach to the vertical surface and the horizontal surface of a welding area under the action of electric arc blowing force and gravity, and can enter a closed space, the surface quality of a weldment can be seriously affected by the welding spatters, and the surface treatment and subsequent accessory installation of the weldment can be affected; if an isolation protection method is adopted, welding spatter can be prevented from contacting with a beam of an automobile instrument panel, but because the main body of the beam of the automobile instrument panel is of a tubular structure with an irregular trend, a plurality of welding points are influenced by weldments to be positioned at included angles, so that protective plates with different sizes need to be continuously replaced, the positions of the protective plates are adjusted to block the welding spatter, and the efficiency of a welding process is also seriously influenced;

2. a large amount of welding spatter can be kept on the surface of the welding spatter isolation device through the protection plate, and after long-term work, the welding spatter can be blocked to a certain extent in a welding area due to layer-by-layer accumulation, and welding precision is affected.

Disclosure of Invention

To solve the above technical problems.

The application provides an automobile instrument board beam welding machine with a welding slag splashing prevention structure, which comprises a workbench and a welding robot, wherein a plurality of tool fixtures for fixing a beam are arranged on the workbench, and a welding gun is arranged at the output end of the welding robot; the protection plate is used for preventing welding slag from splashing on the surface of the weldment, a working hole used for exposing a welding area, a pumping-out cylinder and a fan are formed in the protection plate, the pumping-out cylinder is used for sucking the welding slag, a feeding hole of the pumping-out cylinder faces the protection plate, and a discharging hole of the pumping-out cylinder is connected with the fan through a filtering piece; the protection plate and the drawing cylinder are arranged at the output end of the welding robot through structural parts; the upper surface of guard plate is equipped with the scraper blade that is used for clearing up the welding slag, still is equipped with clean actuating mechanism on the guard plate, and clean actuating mechanism control scraper blade is close to and takes out from a section of thick bamboo when the guard plate breaks away from the crossbeam.

Preferably, the protection plate is foldable.

Preferably, the protection plate comprises a main panel, the working hole is formed in the main panel, at least one wing plate is arranged on the side wall of the main panel, and the wing plate is hinged with the main panel.

Preferably, the main panel and the wing plate are both arc-shaped structures.

Preferably, cooling channels are formed in the main panel and the wing plates.

Preferably, the upper surface of the main panel is provided with two springs for controlling the wing plates to unfold, the main panel is elastically connected with the wing plates through the first springs, the main panel is also provided with a linear driver for controlling the wing plates to unfold, and the wing plates are only acted by the pre-tightening force of the first springs when the linear driver is in a non-working state.

Preferably, clean actuating mechanism is including the bottom plate, and the bottom plate passes through gag lever post and pterygoid lamina sliding connection, and the cover is equipped with the second spring on the gag lever post, and the bottom plate is located the below of guard plate under the second spring normality, and the bottom plate passes through the interlock subassembly to be connected with the scraper blade transmission, and the scraper blade position is close to and takes out from a section of thick bamboo when the bottom plate is in the guard plate below.

Preferably, rolling bodies are arranged below the bottom plate.

Preferably, the scraper blade is including well position board, well position board slidable mounting in the upper surface of main panel to and the side position board, side position board slidable mounting on the pterygoid lamina, and the side position board passes through the connecting rod to be connected with the bottom plate transmission, is equipped with sliding block and third spring on the side position board, has seted up the notch on the well position board, promotes the sliding block under the third spring extension state and is in the notch.

Preferably, still including electromagnetic mechanism, electromagnetic mechanism sets up in the lower surface of guard plate.

Compared with the prior art, the invention has the beneficial effects that:

1. when the crossbeam and the weldment are welded, the surface of the crossbeam is protected in a wrapping manner through the foldable protection plate, so that welding slag is prevented from falling on the surfaces of the crossbeam and the weldment, the welding slag carried by the protection plate can be timely cleaned through the cleaning driving mechanism, the service life of the protection plate is prolonged, and the welding slag is prevented from being accumulated to influence the welding process;

2. circulating cooling water is injected into the cooling channel to ensure that the main panel and the wing plate are in a low-temperature state and ensure that welding slag can be rapidly solidified to cooperate with the cleaning of the scraper plate;

3. through at guard plate lower surface installation electromagnetic mechanism, can make the welding slag that the guard plate upper surface contains iron, nickel, cobalt can not appear the secondary because of the vibration that welding process produced and splash under the effect of magnetic force.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a perspective view of a welding robot, a welding gun, a guard plate and a draw-off drum of the present invention;

FIG. 4 is a first perspective view of the welding gun, the shielding plate and the draw-off cylinder of the present invention;

FIG. 5 is a schematic perspective view of a second embodiment of the welding gun, shielding plate and draw-off barrel of the present invention;

FIG. 6 is a front view of the weld gun, shield plate and draw-off canister of the present invention;

FIG. 7 is a first perspective view of a fender of the present invention;

FIG. 8 is a schematic perspective exploded view of the fender panel of the present invention;

FIG. 9 is a schematic perspective view of the squeegee of the present invention;

FIG. 10 is a perspective view of the guard and cleaning drive mechanism of the present invention;

FIG. 11 is an enlarged view taken at A of FIG. 10;

fig. 12 is a schematic perspective view of a second protection plate according to the present invention.

The reference numbers in the figures are:

1-a workbench; 11-tooling a jig;

2-a welding robot;

3-a welding gun;

4-protection plate; 41-a working hole; 42-a main panel; 421-a cooling channel; 422-upper plate; 423-lower plate; 43-wing plate; 44-a first spring; 45-linear drive;

5, drawing out the cylinder;

6-a structural member;

7-a scraper; 71-a median plate; 711-notch; 72-side plates; 721-sliding blocks; 722-a third spring;

8-cleaning the driving mechanism; 81-a bottom plate; 811-rolling elements; 82-a limiting rod; 83-a second spring; 84-a linkage assembly; 841-a first connecting rod; 842-a slide; 843-a second link;

9-an electromagnetic mechanism; 91-iron wire; 92-a wire;

10-beam.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

As shown in fig. 1 to 10, the following preferred technical solutions are provided:

a header board beam welding machine with a welding slag splashing prevention structure comprises two work tables 1 and two welding robots 2, wherein the two work tables 1 are arranged around the welding robots 2, a plurality of tool fixtures used for fixing beams 10 are arranged on the work tables 1, and welding guns 3 are arranged at the output ends of the welding robots 2; the protection plate 4 is used for preventing welding slag from splashing on the surface of a weldment, a working hole 41 used for exposing a welding area, a drawing cylinder 5 and a fan are formed in the protection plate 4 and used for sucking the welding slag, a feeding hole of the drawing cylinder 5 faces the protection plate 4, the working hole 41 of the drawing cylinder 5 is arranged on the same axis, and a discharging hole of the drawing cylinder 5 is connected with the fan through a filtering piece; the protection plate 4 and the drawing cylinder 5 are arranged at the output end of the welding robot 2 through a structural part 6, a nozzle of the welding gun 3 penetrates through the drawing cylinder 5 and is positioned above the protection plate 4 and below the drawing cylinder 5, and the nozzle of the welding gun 3 faces to a working hole 41 of the protection plate 4; the upper surface of the protection plate 4 is provided with a scraping plate 7 used for cleaning welding slag, the protection plate 4 comprises a main panel 42, a working hole 41 is formed in the main panel 42, two wing plates 43 are symmetrically arranged on two sides of the main panel 42, the wing plates 43 are hinged with the main panel 42, the main panel 42 and the wing plates 43 are both arc-shaped structures, compared with a flat plate structure, the arc-shaped structures can better cover the cross beam 10 with a tubular structure and reduce the space occupancy rate, the upper surfaces of the wing plates 43 in unfolded states of the wing plates 43 are flush with the upper surface of the main panel 42, the lower surfaces of the wing plates 43 in unfolded states of the wing plates 43 are flush with the lower surface of the main panel 42, one side of the wing plates 43, which is far away from the main panel 42, is provided with convex edges, the scraping plates 7 are symmetrically arranged along the working hole 41 of the protection plate 4, the scraping plate 7 crosses the main panel 42, and two ends of the scraping plate 7 are respectively located on the upper surfaces of the two wing plates 43; still be equipped with clean actuating mechanism 8 on guard plate 4, clean actuating mechanism 8 symmetry sets up in the both sides of guard plate 4, clean actuating mechanism 8 is including bottom plate 81, bottom plate 81 is the arc structure, and the external diameter of bottom plate 81 slightly is less than pterygoid lamina 43 internal diameter, bottom plate 81 is in the below of pterygoid lamina 43, bottom plate 81's bottom portion is laid and is provided with a plurality of balls, ball and bottom plate 81 swing joint, because often need shift position in the welded in-process, it leads to guard plate 4 and bottom plate 81 and crossbeam 10 to produce direct friction to remove when can avoiding welding through the setting of ball, the lateral wall of bottom plate 81 turns up the book, be equipped with gag lever post 82 on the bottom plate 81, gag lever post 82 and the chimb department sliding connection of pterygoid lamina 43, the cover is equipped with second spring 83 on the gag lever post 82, the one end and the chimb of second spring 83 are connected, the other end and the upper surface connection of bottom plate 81 of second spring 83, bottom plate 81 upper surface symmetry is equipped with two interlock subassemblies 84, the stress end of two interlock all is connected with bottom plate 81, the output of two interlock subassemblies 84 are connected with two scrapers 7 respectively.

It is specific, in order to solve the technical problem that the welding slag splashes in the header board crossbeam 10 welding process, the staff need place crossbeam 10 on a workstation 1, then the relative position one-to-one with weldment and crossbeam 10 through the frock tool 11 that sets up on the workstation 1, need welding robot 2 to weld between crossbeam 10 and the weldment through welder 3 after crossbeam 10 all accomplishes with a plurality of welded positions and fixes, the in-process staff of welding robot work places next crossbeam 10 that needs welding and welding on another workstation 1 and fixes in this clearance, welding robot 2 is through the concrete process of welder 3 in the course of the work and is: determining a welding point and covering the protection plate 4 at the position of the welding point, wherein in the process of approaching and covering the protection plate 4, firstly, the bottom plate 81 of the cleaning driving mechanism 8 is firstly contacted with the surface of the cross beam 10, then in the process of further approaching the protection plate 4 to the surface of the cross beam 10, the distance between the protection plate 4 and the bottom plate 81 below the protection plate 4 is continuously reduced until the protection plate 4 covers the welding point of the cross beam 10, the working hole 41 on the protection plate 4 can expose the welding area of the welding point, at the moment, the welding gun 3 utilizes the high current of the welding machine, the heat generated by the high voltage is accumulated at the nozzle of the welding gun 3, the contact point between the cross beam 10 and the weldment is melted, after the melting point is cooled, the relative positions of the cross beam 10 and the weldment are fixed and connected into a whole, and in the welding process, no matter manual arc welding, carbon dioxide gas shielded welding MAG and consumable electrode argon arc welding, the welding wire is an electrode, the arc burns violently, a large amount of spatter is generated, because the welding point is covered by the protection plate 4, the welding spatter under the action of arc blowing force and gravity can fall on the upper surface of the protection plate 4 and can not fall and attach to the surface of the cross beam 10, the welding robot 2 can drive the welding gun 3, the protection plate 4 and the drawing cylinder 5 to be away from the welding point when the welding is completed, the distance between the protection plate 4 and the bottom plate 81 below the protection plate is continuously enlarged under the pushing action of the second spring 83 in the process of being away from the welding point, meanwhile, the bottom plate 81 can pull the stressed ends of the two linkage assemblies 84 to move along with the two linkage assemblies, the output ends of the two linkage assemblies 84 respectively drive the two scraping plates 7 to approach each other along the upper surfaces of the main panel 42 and the wing plate 43, the welding slag attached to the upper surfaces of the main panel 42 and the wing plate 43 is gathered at the feeding hole of the drawing cylinder 5 in the process of the scraping plates 7, air in the pumping-out cylinder 5 is pumped out at a high speed by a fan, welding slag at a feed inlet of the pumping-out cylinder 5 is sucked in and finally collected by a filter element; because there will be some welding points in the contained angle position in welding process to crossbeam 10, if the size that directly reduces guard plate 4 will lead to blockking that the ability that the welding slag splashes reduces, so at this moment just need pterygoid lamina 43 in time to make the action of rolling over, concrete process is as follows: confirm the welding point and cover guard plate 4 in the welding point position, in the in-process that guard plate 4 is close to and covers, at first clean actuating mechanism 8's bottom plate 81 with produce the weldment contact of contained angle at first, then at the in-process that guard plate 4 is further close to crossbeam 10 surface, because bottom plate 81 turn-ups department has certain radian, can reduce the frictional force with welding contact and transmit the extrusion force to pterygoid lamina 43 through gag lever post 82 during turn-ups atress, pterygoid lamina 43 turns over and turns over directly towards main panel 42 direction after the atress, the working hole 41 on guard plate 4 can expose the weld zone of contained angle department welding point outside this moment, the area of contact of whole guard plate 4 and crossbeam 10 reduces, but the pterygoid lamina 43 after turning over and over can cover on the weldment that produces the contained angle, thereby avoid welding slag to splash on the weldment in the welding process.

As shown in fig. 7, the following preferred technical solutions are provided:

expansion components are symmetrically arranged at two ends of the main panel 42 and comprise two first springs 44 and a linear actuator 45, the two first springs 44 are arranged on the upper surface of the main panel 42, the two first springs 44 are coaxially arranged, the two first springs 44 are respectively connected with the convex edges of the two wing plates 43, the linear actuator 45 is arranged on the upper surface of the main panel 42, the linear actuator 45 is specifically a double-head cylinder but is not limited to the double-head cylinder, and two ends of the linear actuator 45 respectively face the convex edges of the two wing plates 43.

Specifically, in order to solve the technical problem of how to control the folding and unfolding states of the wing plates 43, when a normal welding mode of angle welding is not performed, two output ends of the linear driver 45 are both in an extending state and abut against flanges of the wing plates 43, so that the wing plates 43 cannot be folded even under a stress condition, where it needs to be explained that in the normal welding mode, because the front bottom plate 81 of the protection plate 4 can be in contact in advance when being close to the cross beam 10, when the protection plate 4 covers the cross beam 10, the distance between the protection plate 4 and the bottom plate 81 is reduced, if the wing plates 43 are pressed by the second spring 83, the wing plates 43 are still in a folding movable state, the folding state can be always processed by the wing plates 43 in the welding process, when some welding points are located between two plates, the height of the protection plate 4 needs to be controlled, the folded wing plates 43 can lead the protection plate 4 to be unable to be inserted into a welding point with a smaller longitudinal space, when the two output ends of the linear driver 45 are both retracted, the wing plates 43 are in the folding state, the first spring 44 is used for controlling the wing plates 43 to be in the extending state under the action of elastic force, only when the folding is performed, and the extrusion force is guaranteed, and the stability of the wing plates is prevented from being shaken.

As shown in fig. 8, the following preferred technical solutions are provided:

cooling channel 421 has all been seted up to the inside of main panel 42 and pterygoid lamina 43, concrete structure uses main panel 42 as an example, main panel 42 comprises upper plate 422 and lower floor's board 423, cooling channel 421 has been seted up to the upper surface of lower floor's board 423, cooling channel 421 encircles the setting of lower floor's board 423, and the exit of cooling channel 421 all communicates with the outside, upper plate 422 and lower floor's board 423 are run through in proper order to work hole 41, the lower surface of lower floor's board 423 is equipped with the bordure of encircleing work hole 41.

Specifically, in order to solve the technical problem of how to avoid adhesion of the welding slag, the main panel 42 and the wing plate 43 are in a low-temperature state by continuously circulating cooling water in the cooling channel 421 in the welding process, so that the welding slag can be quickly condensed into small particles when splashed on the upper surfaces of the main panel 42 and the wing plate 43, the situation that the welding slag cannot be processed by the scraper 7 and the pull-out cylinder 5 when the welding slag is splashed in a liquid state is avoided, and the welding slag cannot be solidified on the surfaces of the main panel 42 and the wing plate 43 because the size of the welding slag is very small, the condensation speed is high, and the residence time is short, so that the welding slag cannot be solidified on the surfaces of the main panel 42 and the wing plate 43, and the scraper 7 cannot generate excessive resistance in the scraping process; because the bottom plate is still in the bottom of guard plate under the pressurized state, so must make the distance of guard plate and weld zone enlarge, so the effect of borduring of lower floor board to the work hole lies in avoiding the welding to splash and directly disperses in the guard plate below.

As shown in fig. 10 and 11, the following preferred technical solutions are provided:

the linkage assembly 84 specifically comprises a first connecting rod 841, a sliding part 842 and a second connecting rod 843, but is not limited to the first connecting rod 841 and the second connecting rod 843, the first connecting rod 841 is hinged to the bottom plate 81, a guide groove is formed in a convex edge of the wing plate 43, the sliding part 842 is slidably mounted in the guide groove, an output end of the first connecting rod 841 is hinged to the sliding part 842, the second connecting rod 843 is slidably mounted on the sliding part 842, and an end part of the second connecting rod 843 is hinged to the side plate 72 of the scraper 7.

Specifically, in order to solve the technical problem how to drive the scraper 7 to clean the welding slag, after the protection plate 4 and the bottom plate 81 are sequentially separated from the cross beam 10 and the weldment, the bottom plate 81 is pushed to be restored to the normal position under the action of the first spring 44, the bottom plate 81 pulls the first connecting rods 841 of the two linkage assemblies 84 in the descending process, the stressed ends of the first connecting rods 841 pull the sliding pieces 842 to move along the guide grooves of the flanges of the wing plates 43, the two sliding pieces 842 pull the scraper 7 to move along the surfaces of the main panel 42 and the wing plates 43 through the second connecting rods 843 after being stressed, and the welding slag is cleaned, and because the second connecting rods 843 and the sliding pieces 842 are in sliding connection, the longitudinal movement of the scraper 7 in the moving process cannot be influenced.

As shown in fig. 9, the following preferred technical solutions are provided:

the scraper 7 comprises a middle plate 71, guide rails are symmetrically arranged on the upper surface of the main panel 42, the middle plate 71 is slidably connected with the guide rails of the main panel 42, and side plates 72, the side plates 72 are separately arranged at two ends of the middle plate 71, the guide rails are symmetrically arranged on the upper surfaces of the wing plates 43, the side plates 72 are slidably connected with the guide rails of the wing plates 43, the side plates 72 are hinged with the end parts of second connecting rods 843, sliding blocks 721 and third springs 722 are arranged on the side plates 72, the sliding blocks 721 are slidably mounted above the side plates 72, one ends of the second springs 83 are connected with the upper parts of the side plates 72, the other ends of the second springs 83 are connected with the sliding blocks 721, notches 711 are respectively arranged at two ends of the middle plate 71, the notches 711 penetrate through the upper surface and the lower surface of the middle plate 71, and the sliding blocks 721 are arranged in the notches 711 under the stretching state of the third springs 722.

Specifically, in order to solve the technical problem that the horizontal area of the protection plate 4 after the wing plate 43 is turned over is reduced to influence the scraper 7, the scraper 7 is functionally divided by a middle plate 71 and two side plates 72, the middle plate 71 is used for cleaning the main panel 42, the side plates 72 are used for cleaning the wing plate 43, and the notches 711 formed in the middle plate ensure that the side plates 72 cannot extrude with the middle plate 71 when the wing plate 43 is folded, so that the wing plate 43 cannot be folded, and the wing plate 43 is further arranged by the sliding blocks 721 and the third springs 722, so that the wing plate 43 is in an extended state, the third springs 722 enter the notches 711 in the middle plate 71 through the sliding blocks, and the side plates 72 can drive the middle plate 71 to move.

As shown in fig. 12, the following preferred technical solutions are provided:

the welding machine for the automobile instrument panel cross beam 10 further comprises an electromagnetic mechanism 9, the electromagnetic mechanism 9 is specifically an iron wire 91 and a lead 92, the iron wire 91 is arranged on the lower surface of the main panel 42, the lead 92 is wound on the iron wire 91, and the lead 92 is connected with a power grid through a control element.

Concretely, in order to solve the technical problem that the welding slag pops out on the protection plate 4 caused by vibration generated in the welding process, the power grid is communicated with the wire 92 through the control element, the wire 92 generates a magnetic field after being electrified and magnetizes the iron wire 91, and the welding slag containing iron, nickel and cobalt on the upper surface of the protection plate 4 is tightly attached to the upper surface of the protection plate 4 under the action of magnetic force.

The foregoing shows and describes the general principles, principal features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. The automobile instrument beam welding machine with the welding slag splashing prevention structure is characterized by comprising a workbench (1) and a welding robot (2), wherein a plurality of tool fixtures for fixing a beam (10) are arranged on the workbench (1), and a welding gun (3) is arranged at the output end of the welding robot (2); the protection plate (4) is used for preventing welding slag from splashing on the surface of the weldment, a working hole (41) used for exposing a welding area, a drawing cylinder (5) used for sucking the welding slag and a fan are formed in the protection plate (4), a feeding hole of the drawing cylinder (5) faces the protection plate (4), and a discharging hole of the drawing cylinder (5) is connected with the fan through a filtering piece; the protection plate (4) and the drawing cylinder (5) are arranged at the output end of the welding robot (2) through a structural part (6); the upper surface of the protection plate (4) is provided with a scraper (7) for cleaning welding slag, the protection plate (4) is also provided with a cleaning driving mechanism (8), and the cleaning driving mechanism (8) controls the scraper (7) to be close to the drawing-off cylinder (5) when the protection plate (4) is separated from the cross beam (10).

2. The welding machine for automobile instrument panel beams with the structure for preventing welding slag from splashing as claimed in claim 1, wherein the protection plate (4) is foldable.

3. The welding machine for automobile instrument panels and cross beams with a welding slag splashing prevention structure according to claim 2 is characterized in that the protection plate (4) comprises a main panel (42), the working hole (41) is formed in the main panel (42), at least one wing plate (43) is arranged on the side wall of the main panel (42), and the wing plate (43) is hinged with the main panel (42).

4. The welding machine for automobile instrument panel beams with a structure for preventing welding slag from splashing according to claim 3, characterized in that the main panel (42) and the wing plate (43) are both arc-shaped structures.

5. The welding machine for automobile instrument panel beams with the structure for preventing welding slag from splashing as claimed in claim 4, characterized in that the main panel (42) and the wing plate (43) are internally provided with cooling channels (421).

6. The welding machine for the cross beam of the automobile instrument panel with the welding slag splashing preventing structure is characterized in that the upper surface of the main panel (42) is provided with a second spring for controlling the unfolding of the wing plate (43), the main panel (42) is elastically connected with the wing plate (43) through the first spring (44), the main panel (42) is further provided with a linear driver (45) for controlling the unfolding of the wing plate (43), and the wing plate (43) is only acted by the pre-tightening force of the first spring (44) when the linear driver (45) is in a non-working state.

7. The welding machine for the cross beam of the automobile instrument panel with the welding slag splashing preventing structure is characterized in that the cleaning driving mechanism (8) comprises a bottom plate (81), the bottom plate (81) is in sliding connection with a wing plate (43) through a limiting rod (82), a second spring (83) is sleeved on the limiting rod (82), the bottom plate (81) is located below the protection plate (4) under the normal state of the second spring (83), the bottom plate (81) is in transmission connection with the scraping plate (7) through a linkage assembly (84), and the scraping plate (7) is close to the drawing cylinder (5) when the bottom plate (81) is located below the protection plate (4).

8. The welding machine for automobile instrument panel beams with a structure for preventing welding slag from splashing according to claim 7, characterized in that rolling bodies (811) are arranged below the bottom plate (81).

9. The welding machine for the cross beam of the automobile instrument panel with the welding slag splashing preventing structure is characterized in that the scraping plate (7) comprises a middle plate (71), the middle plate (71) is slidably mounted on the upper surface of the main panel (42), side plates (72) are slidably mounted on the wing plates (43), the side plates (72) are in transmission connection with the bottom plate (81) through connecting rods, sliding blocks (721) and third springs (722) are arranged on the side plates (72), notches (711) are formed in the middle plate (71), and the sliding blocks (721) are located in the notches (711) under the stretching state of the third springs (722).

10. The welding machine for the cross beam of the automobile instrument panel with the welding slag splashing preventing structure is characterized by further comprising an electromagnetic mechanism (9), wherein the electromagnetic mechanism (9) is arranged on the lower surface of the protection plate (4).

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